QDialogButtonBox按钮可以在连接后不工作

Question

我有一个mainWindow类，当双击QTabBar时调用函数mainWIndow::ShowDialogBox()。会出现对话框，但它没有连接按钮。我有ShowDialogBox的连接电话。它在连接上给了我红色的下划线

 no instance of overloaded function "MainWindow::connect" matches the argument list"

这是我的密码

bool MainWindow::eventFilter(QObject *object, QEvent *event)
 {
    if (object == mTabWidget->getTabBar() && event->type() == QEvent::MouseButtonDblClick) 
    {
        qDebug()<<"dblclk";

    ShowDialogBox();

    }

    return QObject::eventFilter(object, event);
}

//Show dialog box when double clicked on QTabBar
void MainWindow::ShowDialogBox(){

    QDialog dialog;
    QVBoxLayout layout(&dialog);
    QLineEdit editLine;
    layout.addWidget(&editLine);

     QDialogButtonBox *dialogButton = new QDialogButtonBox(QDialogButtonBox::Ok );
     connect(dialogButton, SIGNAL(accepted()), dialog, SLOT(accept())); //this 'connect' is underlined
     layout.addWidget(dialogButton);
     dialog.setLayout(&layout);


    if(dialog.exec() == QDialog::Accepted)
    {
        mTabWidget->setTabText(0, editLine.text());
    }

  }

我在mainWindow.h中添加了信号和插槽

private slots:
    void accept();

signals:

    void accepted();

我花了好几个小时在这件事上，但没有运气。我对Qt很陌生。

Answer 1

行：

connect(dialogButton, SIGNAL(accepted()), dialog, SLOT(accept()));

应：

connect(dialogButton, SIGNAL(accepted()), &dialog, SLOT(accept()));

因为第三个参数必须是一个内存地址(指针)。